Newer features in Unturned load textures, meshes, audio, etc from .content assetbundles which this guide explains how to create. If you're looking for the older method of exporting files from Unity check out the Objects guide here: http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=470771210

Select the folder containing your files in the Unity project browser. In the bottom right of the inspector create a new assetbundle for it ending with the .content extension:



A simple tool for exporting these assetbundle(s) can be found in the Unturned/Bundles/Sources/Tools folder. Follow the README inside to set it up. Open it from Window > Content Tool. By default your .content files will be created in your Unity project folder /Builds/Shared/Content.

Unturned will search the Content folder in the game folder, workshop folders and map folders for any .content file. These are registered and browsable in the content browser.

You can then drag and drop content from the content browser onto a content reference in an inspector.

In your code you can expose a content reference like so:

[Inspectable("#NS::Token")]
public ContentReference<T> content;